CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Haojie Zeng,Qi Wang,Dingyu Xing,Jiajia Yuan,Feiyun Sun
To solve the freshwater dilemma, photothermal membrane distillation (PMD) has become a promising and sustainable method for desalination and wastewater purification. Ti 3 C 2 T x has attracted much attention in the field of Janus PMD membrane preparation due to its hydrophilic surface and high photothermal conversion efficiency. However, the shortcomings of easy stacking and surface light reflection limit its application. In this work, electrostatic adsorption self-assembly between Ti 3 C 2 T x and UiO-66-NH 2 by pH adjusting is designed, and the Ag-modified Ti 3 C 2 T x aims to significantly improve the photothermal conversion efficiency-Ag@Ti 3 C 2 T x /UiO-66-NH 2 membrane. Compared to the origin Ti 3 C 2 T x membrane, the photothermal layer containing UiO-66-NH 2 contributes to the unimpeded transport of water, and this 3D photothermal layer structure can maximize the capture and absorption of light, which contributes to enhanced high light absorption, photothermal conversion ability and more efficient mass transfer. Thus, a consistently high vapor flux of 1.13 kg/m 2 h and photothermal efficiency over 77.3 % were synchronously obtained, under one solar irradiation. Specifically, Ag@Ti 3 C 2 T x /UiO-66-NH 2 membrane meanwhile exhibits commendable water permeate production and high stability in anti-scaling tests, as well as reliable physical stability, which offers great application potential in PMD process. Our work provides a novel strategy for constructing PMD membrane with stably enhanced mass transfer and photothermal properties to satisfy real application.
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POLYMER
·
2026
·
IF 5.1
Junqi Zhao,Zicheng Chen,Jiahao Huang,Jingxian Zhang,Langhuan Huang,Shaozao Tan,Yongqiang Xiong
Bacterial infections and excessive oxidative stress severely impede the wound healing process, and the development of multifunctional wound dressings with antibacterial, antioxidant, and biosafety properties is of great clinical significance. In this study, DAHA/CMCS/Ag@PDA (DCA) injectable hydrogels were successfully prepared by dual-dynamic crosslinking of Schiff base and hydrogen bonds. Dopamine graft-modified oxidized hyaluronic acid (DAHA) and carboxymethyl chitosan (CMCS) constructed a dynamic and reversible cross-linking network of the hydrogel, which endowed the hydrogel with excellent injectable, self-healing, shape-adaptive, and high adhesion properties. Meanwhile, DAHA and Ag@PDA, which are rich in catechol groups, provided the hydrogels with highly efficient synergistic antioxidant properties, which could effectively scavenge various free radicals. In addition, the loading of Ag@PDA endowed the hydrogel with excellent Ag + release and NIR-II photothermal conversion properties, and DCA2 could realize efficient killing (99.6%) of S. aureus and E. coli through the synergistic action of Ag + slow release and NIR-II photothermal, which could effectively promote the healing of bacterial-infected wounds. In conclusion, this study provides a new design strategy for hydrogel dressings for the treatment of bacterial-infected wound healing through the multifunctional integration of NIR-II photothermal synergistic antibacterial and antioxidant properties.
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Materials Today Chemistry
·
2025
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IF 6.7
Ting Zhang,Ruyi Zhao,Bin Yang,Jiaojiao Sang,Zhengzhi Zheng,Tianyu Lu,Xinyu Li,Zihao Xu,Rui Hu,Zihao Lv,Ru Xia,Jiasheng Qian,Ning Jia
Addressing the demand for high-thermal-conductivity composites in flexible electronics thermal management, this study designed a bioinspired composite film based on bacterial cellulose (BC) nanofibers as the flexible matrix. The MXene@TA-Ag/BC (MTAB) composite film with a “brick-and-mortar” biomimetic structure was constructed through vacuum-assisted filtration and hot-pressing processes, incorporating tannic acid (TA)-modified MXene nanosheets with in situ loaded silver nanoparticles (AgNPs). The dihydroxy groups of TA not only facilitated the uniform deposition of AgNPs on MXene surfaces but also formed multiple hydrogen bonds with the BC matrix, significantly enhancing interfacial compatibility. When the mass fraction of the composite filler reached 40 %, the in-plane thermal conductivity of the as-prepared composite films significantly increased from 2.66 W/m·K (of pure BC films) to 10.99 W/m·K, representing an increase of 313.8 % in comparison to that of pure BC matrix. Mechanical characterization further revealed remarkable tensile strength (114.8 MPa), primarily attributed to synergistic stress-transfer between MXene@TA-Ag fillers and the BC matrix. Thermogravimetric analysis demonstrated superior thermal stability with a maximum decomposition temperature of 277.4 °C, indicating suitability for high-temperature applications.The present work achieved synergistic optimization of thermal and mechanical properties through a multi-scale interfacial engineering strategy, offering new insights for developing next-generation flexible thermal interface materials.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
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IF 7.7
Jian Chen,Jiaying Yang,Yanbin Lu,Zhiyuan Dai,Huan Li
Okadaic acid (OA), a diarrhetic shellfish toxin, poses severe health risks to humans and causes substantial economic losses in aquaculture, creating an urgent need for rapid, sensitive, and field-deployable detection technologies for tracing its contamination in shellfish. Herein, we proposed a surface-enhanced Raman scattering (SERS) sensing method for OA in shellfish. The system was constructed by integrating Raman-active aptamer-modified gold/magnetic nanohybrids (Apt-Au/Fe 3 O 4 NHs) with a complementary sequence-modified silver nanoparticle-functionalized bacterial cellulose film (CS-Ag NPs@BC-film). Upon the introduction of OA, it competitively bound with the Apt, leaving the CS-Ag NPs@BC-film after magnetic separation, thereby inducing a reduction in the Raman signal. Sensitive quantification of OA was achieved by measuring the difference in the Raman signal, achieving a detection limit as low as 2.82 × 10 −2 nM (S/N = 3). Analysis of the spiked real samples demonstrated good accuracy and precision of the method. Compared with commercial ELISA kits, the method presented with comparable detection results while offering simplified operational workflows. These findings highlight its potential as a practical tool for monitoring hazardous contaminants in aquatic environments and ensuring seafood safety.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2025
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IF 4.6
Zhuoying Li,Linan Zhou,Fang Zhang,Huiyi Yang,Lihua Guo,Fang Chai
Heavy metals adversely affect the environment, ecosystems, and human health. The effective detection and treatment of heavy metals has become a major global concern. Herein, calcium and nitrogen co-doped carbon dots (E-CDs) were developed using cheap kitchen waste eggshells as precursors, and utilized as dual-mode fluorimetric/colorimetric sensor for the multivariate detection of Hg 2+ and Ag + . The E-CDs exhibited yellow emission at 420 nm excited at 567 nm, with a quantum yield of 15.49% and lifetime of 12.92 μs. The multivariate detection of Hg 2+ and Ag + can be achieved selectively by distinguishing via dual-mode respectively. The limit of detection (LOD) for Hg 2+ reached 11.28 nM, while the Ag + can be determined by fluorimetric/colorimetric dual-mode with LODs of 128.23 nM and 1.02 μM, respectively. Remarkably, the E-CDs integrated with a smartphone-based paper sensor supported by RGB analysis achieved the detection of Hg 2+ and Ag + with LODs of 56.2 nM and 90.96 nM, respectively. Notably, the recoveries in real samples attained 96.3–105.7% with excellent environmental tolerance. Furthermore, a logic gate circuit was developed to support the potential practical intelligent application. This work highlighted a cost-effective, multi-functional sensing strategy with significant potential for monitoring heavy metal contaminants in environmental and food safety applications.
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FOOD CHEMISTRY
·
2025
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IF 9.8
Guotong Chen,Fang Mi,Shan Zhang,Xuehui Rao,Jian Sun,Zhong Yang,Ming Guan
This study reports the design and fabrication of a magnetic nanoporous carbon-based recyclable surface-enhanced Raman scattering (SERS) substrate Co/C@Ag/g-C 3 N 4 , which can simultaneously achieve SERS detection and visible-light photocatalytic degradation of malachite green (MG). Co/C and g-C 3 N 4 can spontaneously adsorb and concentrate MG near plasmonic nanoparticles, thereby enhancing the SERS response. The substrate exhibited a SERS enhancement factor of approximately 1.3 × 10 6 . The limit of detection (LOD) for MG in aquaculture water, prawn, and tilapia was 8.2 × 10 −11 M, 0.08 μg/kg, and 0.06 μg/kg, respectively. The substrate can be magnetically collected from the complex matrix and regenerated through photocatalytic degradation. Eliminates the co-centrifugation of the SERS substrate with the complex matrix. Even after 4 regeneration cycles, the substrate retained nearly 80 % of its original SERS intensity. This study presents a novel strategy for constructing self-enriched, self-cleaning, and recyclable substrates with promising applications in food safety and environmental protection.
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Light-Science & Applications
·
2026
·Vol. 15
·期 1
·87
·
IF 23.4
Wang Yingsheng,Dang Peipei,Zeng Zixun,Liu Dongjie,Zhang Guodong,Tian Long,Li Kai,Ma Ping’an,Wei Yi,Lian Hongzhou,Hou Zhiyao,Li Guogang,Lin Jun
Lead-free halide double perovskites (LFHDPs) have gained prominence as eco-friendly optoelectronic materials due to their structural stability and flexible tunability. Lanthanide (Ln 3+ ) ions have rich energy levels, which can endow LFHDP materials with emissions ranging from visible to near-infrared (NIR) region through the ion doping strategy. However, their NIR applications remain limited by narrowband emission and low photoluminescence quantum yield (PLQY) due to weak absorption cross-section. Herein, Cs 2 NaInCl 6 :Ln 3+ were successfully synthesized, and the problem of low absorption of Ln 3+ ions is effectively solved. Incorporating Mo 4+ /Ag + ions achieves a near-unity PLQY and expands the excitation spectrum across the full visible range and a small part of NIR region (250–850 nm). Mechanism analysis revealed synergistic energy transfer pathways involving self-trapping excitons and intermediate energy states of Mo 4+ ion, enhancing both photon absorption and PLQY. The universal applicability of this approach has been validated across Bi-based and multiple lanthanide ions (Ln: Ho, Er, Tm, Yb). These optimized materials demonstrate exceptional broadband emission characteristics suitable for multi-scenario NIR applications, including light-emitting-diodes (LEDs), night vision, imaging, anti-counterfeiting technologies. This co-doping methodology establishes a versatile framework for overcoming inherent limitations in Ln 3+ -activated materials, offering new possibilities for efficient NIR optoelectronic devices.
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ACS Applied Energy Materials
·
2026
·
IF 5.5
Xiaoling Peng,Ying Luo,Jiawei Xue,Farzaneh Arabpour Roghabadi,Qiang Wang,Zheng Wang,Hong He
Visible-light-driven CO2 reduction coupled with H2O oxidation is an attractive route toward artificial photosynthesis; however, its realization is often limited by inefficient charge separation in a CO2-reduction photocatalyst, sluggish interfacial charge transfer in Z-scheme systems, and insufficient CO2 activation. Herein, we report a visible-light-driven Z-scheme system in which CoOx−Ag dual-cocatalyst-modified Bi4TaO8Cl0.9Br0.1 served as the CO2-reduction photocatalyst, surface-treated WO3 as the H2O-oxidation photocatalyst, and I−/IO3− as the redox mediator. The CoOx−Ag dual cocatalysts play distinct yet cooperative roles in the Z-scheme architecture. CoOx preferentially extracts photogenerated holes and accelerates mediator oxidation, thereby promoting charge separation in Bi4TaO8Cl0.9Br0.1 and facilitating inter-photocatalyst charge transfer, whereas Ag acts as an electron-enrichment center that enhances CO2 adsorption and activation and promotes the formation of the key *COOH intermediate for selective CO production. Owing to this synergistic regulation of charge transfer and surface reaction kinetics, the optimized Z-scheme system achieved selective CO2 reduction to CO with near 100% selectivity and synchronous O2 evolution in a near-stoichiometric ratio relative to CO under visible-light irradiation. This work offers a dual-cocatalyst design strategy for efficient visible-light-driven Z-scheme CO2 reduction coupled with H2O oxidation.
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JOURNAL OF POWER SOURCES
·
2026
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IF 8.4
Chenyu Wu,Pengfei Lu,Nan Zhang,Xiang Luo,Wenxiu Lin,Yue Tang,Xiaohong Chen,Shengjuan Li,Lei Li
Lignin has attracted significant attention for its complicated structures and potential to produce high-value carbon materials from low-cost waste. The present work demonstrates successful water-based electrospinning of lignin-based carbon fiber (LCFs) precursors, despite challenges posed by high lignin content. The diameters of precursor fibers decreased as lignin content increased. After carbonization, porous carbon fibers with an average diameter of 72 ± 27 nm were successfully fabricated. Such CFs exhibited a high specific surface area. When loaded with Ag nanoparticles, LCFs-Ag exhibited remarkable electrocatalytic performance, including an oxygen reduction reaction (ORR) half-wave potential of 0.85 V and an oxygen evolution reaction (OER) overpotential of 0.382 V at 10 mA cm −2 . This performance is on par with Pt/C and IrO 2 . Rechargeable liquid zinc-air batteries (LZABs) assembled with LCFs-Ag yielded an open-circuit voltage of 1.50 V, a peak power density of 135.9 mW cm −2 , and cycling stability of over 400 h, outperforming LZABs with a Pt/C + IrO 2 cathode under identical experimental conditions. The present work highlights that water-based electrospinning of lignin can be used to convert waste into a valuable resource, producing carbon fibers with excellent electrocatalytic properties for rechargeable zinc-air battery applications.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Liangliang Tang,Dongxu Yao,Yongfeng Xia,Hanqin Liang,Yu-Ping Zeng
Gas-pressure sintered silicon nitride (Si 3 N 4 ) ceramic was brazed to oxygen-free copper (OFC) foil using 20.22 ± 0.93 mg/cm 2 of Ag-Cu-TiH 2 filler at 875 ◦ C for 0.5 h. The effect of TiH 2 content on the 3D morphology, including the cross-section microstructure and etched surface morphology of Si 3 N 4 ceramic/OFC foil joints, was analyzed. An evolution model of the interfacial microstructure for joints was proposed based on 3D morphological analysis. The reaction between the brazing alloy and Si 3 N 4 ceramic formed the interfacial reaction layer and the inside reaction zones during brazing. The growth mechanism of the interfacial reaction layer was discussed in detail. The peeling test was used to evaluate the bonding strength of the Si 3 N 4 ceramic/OFC foil joints, and the optimum peeling strength of 25.1 N/mm was achieved at 5 wt% TiH 2 content. The interfacial microstructure of the joints changed with TiH 2 content, leading to different main fracture mechanisms and corresponding peeling strengths.
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Analytical Methods
·
2023
·Vol. 15
·期 18
·2199-2209
·
IF 3.1
Kuiguo Han,Liang Chen,Wen Zhang,Yanqun Tong,Jiyong Shi,Xiaoyu Su,Xiaobo Zou
This work describes the synergistic application of semi-complementary aptamer pairs and signals on–off ratio strategies on glassy carbon electrodes (GCE) for detecting lead ions (Pb2+) in fish. Gold nanoparticles (AuPNs) as the electrode substrate can provide added binding sites for the aptamers and improve the conductivity of the electrodes. Pb2+ aptamers containing ferrocene (Fc) molecules act as molecular recognizers in the sensing system. In the presence of target ions, Fc signals are affected by conformational changes of the aptamer. The “Ag nanowires@zeolitic imidazolate framework-8 with methylene blue (AgNWs@ZIF-8/MB)” can be semi-complementary to the Pb2+ aptamer after binding to single-stranded DNA (S1). However, S1/AgNWs@ZIF-8/MB self-assembled with Pb2+ aptamer (Apt) by hybridization incubation was quickly replaced by Pb2+ competitively, resulting in the loss of methylene blue (MB) signaling molecules. Hence, the internal reference signal (MB) and conformation change signal (Fc) comprise the ratio sensing system well. Morphology, spectroscopy, and electrochemistry methods have validated the modification and sensing behaviors. The used Apt has made considerable progress in analytical performance. In interference studies and stability checks, the ratio measurement signal IFc/IMB is a more reliable signal than the single signal readout. Following a log-linear relationship, this sensor provides a wide linear range. Furthermore, the proposed sensor can be used to determine Pb2+ in fish samples, and the results agree with those obtained using ICP-MS and recovery tests.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jun Dong,Wanting Zhou,Chengyuan Yang,Haoran Wu,Qingyan Han,Chengyun Zhang,Wei Gao,Xuewen Yan,Mengtao Sun
The absorption and scattering frequencies of surface plasmon resonance can be selectively adjusted by changing the morphology, size, structure, arrangement, and gap between noble metal nanoparticles so that the local electromagnetic field on the substrate surface can be further enhanced. This change will promote and popularize surface-enhanced Raman spectroscopy. This paper reports the research results and improvement scheme of surface enhanced Raman scattering (SERS) activity of silver-coated gold nanocubed/organism (Au@Ag/CW NCs) prepared by three-phase self-assembly. In the experiment, the uppermost oil phase in the three-phase self-assembly process was optimized as ethanol and n-hexane solution containing a specific concentration of a probe molecule rhodamine 6G or aspartame. The probe molecules were directly self-assembled on the surface of the composite substrate to avoid the possible loss and pollution during immersion and preservation and achieve the purpose of rapid detection. The results show that the Au@Ag/CW NC array substrate is a periodic cubic ring structure. The sensitivity, uniformity, reproducibility, and stability of composite Au@Ag/CW NC array substrates are verified by comparing the Raman activities of various substrates. The feasibility of using the substrate to realize rapid SERS detection, compared with the advantages and disadvantages of the traditional soaking method, proved that the prepared substrate and improvement direction have excellent potential for application and development prospects in the field of rapid food additive detection.
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危险品化学品经营许可证（带存储）